Unfortunately,
Microsoft did not release a suite of tools for GroupWise migration to
2007. However, you can consider tools provided with Exchange 2003. They
include the following: Connector for Novell GroupWise—
Provides the capability to route mail to the GroupWise system and for
Exchange to understand the GroupWise address space. After
configuration, it also enables the two directories to be synchronized
to ensure that there is a consistent address book across both systems.
Calendar Connector— Enables users from both systems to see each others’ scheduling information.
Migration Wizard— Includes an option to migrate from Novell GroupWise.
To
use these tools, you need to install an Exchange 2003 server first
because you cannot install an Exchange 2003 server into a pure Exchange
2007 organization. Install the 2003 server, use the tools to move over
everything you need, and then you can move those items over to your
Exchange 2007 server.